Assurance

He who has the Son has life; he who does not have the Son of God does not have life. - 1 John 5:12(NIV)

Many times especially little children or new believers will seek assurance of their spiritual state, asking, "Am I really saved?" or they will repeated answer the call they feel. This is the verse you can use to encourage them. If God is with you, He is. Just believe it!